Hi. I was looking at using 2 100gal water resevoirs, they cost around $180 each and are 4'x4'x14". The other option would be to build raised beds out of spruce lumber (4x8x 16") and then waterproof using ferrocement(heavy) or fiberglass fabric and resin (lightweight).

Has anyone made thier own gear out of fiberglass? Would it require a special type or sealer afterwars to make it non toxic?

I have a gallon of resin already from a different projects, and woud like to use it if it will work.

Cheers